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Financial instruments - fair value of the convertible senior secured notes (Details) - Financial liabilities at fair value through profit and loss	Dec. 31, 2021
Interest rate
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Significant unobservable input liabilities	9.0
Risk-free rate
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Significant unobservable input liabilities	1.25
Dividend yield
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Significant unobservable input liabilities	0
Volatility
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Significant unobservable input liabilities	52.5
Credit spread
Disclosure of significant unobservable inputs used in fair value measurement of liabilities [line items]
Significant unobservable input liabilities	21.8

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The value of significant unobservable input used in the measurement of the fair value of liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2021-01-01
-Paragraph 93
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_d&doctype=Standard
-URIDate 2021-03-24

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